Process of constructing window-sashes.



M. LACHMAN. PROCESS OF CONSTRUCTING WINDOW SASHES.

APPLICATION FILED JAN. 22. 1915.

1,152,741. PatentedSept.7,1915.

INVENTOR WI TNESSES BY QZM 4/@Z% /WW%W UNITED sTATEs PATENT OFFICE.

MAURICE LACHMANS OF NEW YORK, N. Y., ASSIGNOR TO UNIVERSAL ELECTRICWELD- ING COMPANY, OF LONG ISLAND CITY, NEW YORK, A CORPORATION OF NEWYORK.

. PROCESS OF CONSTRUCTING WINDOW-SASHE S.

' Specification of Letters Patent.

Patented Sept. 7, 1915.

Original application filed November 15, 1911, Serial No. 660,373.Divided and this application filed January 22, 1915. Serial No. 3,704.

To aZZ whom it may concern: I

Be it known that I, MAURICE LAoHMArI, a citizen of the United States,and a resident of- New York, in the county of New York and State of NewYork, have invented certain new and useful Improvements in Processes ofConstructing Window-Sashes, of which the following is a specification.

y present invention relates to a process of constructing metal windowsashes and particularly to. the method of locking the members thereoftogether at their intersections.

"The object of the invention is to simplify the mode of constructing awindow sash whereby the sash can be more quickly made and will becheaper, simpler and more eflicient than when a mechanical joint isemployed. j

With this end in view the invention consists in the improved process ofconstructing metal sash having locked joints as hereinafter moreparticularly described and then specified in the claims.

In the accompanying drawings, Figure 1 illustrates a front elevation ofa metal window sashconstructed in accordance with this invention, onepanel only being shown. Fig. 2 is a rear elevation of the same showingtwo of the finished joints. Fig. 3 is .a cross-section taken on the line33 Fig. 1. Fig. 4 is a perspective'view illustrating the manner ofassembling the members at the joint.

The complete window structure may be composed of. any number of sashbars or members 1, 2, arranged to intersect each other .at any desireddistance apart, each of the members preferably being of a generalT-shape in cross-section. The sash members or bars are made of anydesired metal, each member comprising a longitudinal web 3 surmounted bya laterally disfposed molding 4 symmetrically arranged with regard tothe web 3. The upper surface'of the molding is preferably provided withalongitudinal bead 5. The members or bars are preferably of solidmetalrolled orotherwise suitably shaped.

.Ateach desiredpoint of intersection of the members-the molding 4 ismitered at each side of the ..web 3 -by removing a section of themolding as shown at 6. The molding is cut away, when the members arewebs or at both. Pre

of the web 3. The miters being disposedalike in each sash member, theoperation of providing them is a simple one and may be effected bypunching out the parts or cutting them away in any desired manner.

The member 1 is provided with a slot 8 piercing the material of the web3 in line with the apex of the miter 6 at each joint.

7 The slot 8 preferably starts at the lower edge of the web 3 in themember or bar 1 and extends into the web for any desired distancebut-leaving the bead 5 of the member 1 continuous. The member or bar 2is provided with a co-acting slot 9 similarly located with regard to themiter and which starts at the bead 5, penetrating into the member 2 forsuch distance that when the members 1 and 2 are fitted together thebases of the slots 8 and 9 will seat on each other, at which time theupper surface of the beads 5 in the members 1 and 2 are located in thesame plane and intersect each other as shown in Fig. 1 It will beunderstood that the slot 9 is just as wide as the bead 5 so that whenthe members are fitted together the bead 5 will entirely close theopening of the slot 9 and form a smooth upper surface on the finishedsash.

The members or bars 1 and 2 are fitted to each other as indicated inFig. 4 by pressing them laterally toward each other, the miters 6closely fitting each other, the bead 5 closing the slot 9 and the web 3of the member 2 fitting in the slot 8 of the member 1.

each other-I weld the two members together at their intersections bymeans of an extra piece or button of metal and utilizing the electricwelding process. The welding may take place at either the upper surfaceof the joint or at the rear edgaof the intersecting -erably and asherein shown, the welding is effected at the edges of the sash and lesstrimming or finishing is necessary than if located at the beads 5. Toquickly carry into effect the locking of the parts and thus cheapen theconstruction I preferably cut away a small portion of ioo . of the webportions .3 as this is at the back the continuous web 3 as indicated at10 in the web of the member 2 at the point where said web intersects theweb of the member 1. Over this intersection and in contact with the fouredges presented by the slot 8 and cut 10 isplaced a small metal buttonor disk 11. Electric current is passed from the disk 11 to theintersecting webs 3 by means of suitably applied current-carryingelectrodes, the metal of the disk coalesoing with the edges of the slot8 and out 10 due to the passage of the current and ,pressure applied toforce the softened metal together and the button down into the cavityformed in the webs by the cut away portions whereby the two webs aresecurely 1 welded together and any relative movement of either isprevented. Thegeneral operation and the apparatus necessary to carry outthe electric welding of parts is now so generally well known that anymore detailed description of this step of the process is thoughtunnecessary.

It will be understood that the process as specifically described is butthe preferred one and that variations of the same may be practisedwithout departing from the spirit .p'i the invention as expressed in theappended claims.

This "application constitutes a division of my application for patentfor metal window sash, filedrNov. 15, 1911, s. N. 660,373.

, What I claim as my invention is '1. The process of oining theintersecting members of a metal window sash consisting in providingmembers having a web portion and a lateral molding, mitering eachpiolding at the 'place of intersection, slotng the web portion .of eachmember from opposite ed es, placing the slotted parts in intermesherelation to bring the moldings n a common plane, placing a separatebutton over and spanningthe intersection and passing a welding currentfrom one to the other and at the same time applying pressure to forcethe parts together to lock the members to each other.

2. The process of joining the intersecting members of a metal windowsash consisting in providing members having a web portion and a lateralmolding, mitering each molding at the place of intersection,- slottingthe web portion of each member from opposite edges, placing the slottedparts in intermeshed relation, proyiding' four shoulders in the web atthe intersections, placing a metal button in contact with said fourshoulders and passing a welding current from one to the other and at thesame time applying pressure. to force the button down into the cavityformed by said shoulders.

3. The process of joining the intersecting members of a metal windowsash consisting in providing members having a web portion and a lateralmolding, m1tering each molding at the place of intersection, yslottingthe web portion of each memberJ-from opposite edges, placin the slottedparts in intermeshed relation, orming a notch in the continuous webwhere it passes through the slot of the other web of January A. D. 1915.

MAURICE LACHMAN.

Witnesses:

F. B. TOWNSEND, REMINGTON Soo'r'r.

